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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/renderer/extensions/logging_native_handler.h"
#include "base/logging.h"
#include "base/strings/stringprintf.h"
namespace extensions {
LoggingNativeHandler::LoggingNativeHandler(ChromeV8Context* context)
: ObjectBackedNativeHandler(context) {
RouteFunction("DCHECK",
base::Bind(&LoggingNativeHandler::Dcheck, base::Unretained(this)));
RouteFunction("CHECK",
base::Bind(&LoggingNativeHandler::Check, base::Unretained(this)));
RouteFunction("DCHECK_IS_ON",
base::Bind(&LoggingNativeHandler::DcheckIsOn, base::Unretained(this)));
RouteFunction("LOG",
base::Bind(&LoggingNativeHandler::Log, base::Unretained(this)));
RouteFunction("WARNING",
base::Bind(&LoggingNativeHandler::Warning, base::Unretained(this)));
}
LoggingNativeHandler::~LoggingNativeHandler() {}
void LoggingNativeHandler::Check(
const v8::FunctionCallbackInfo<v8::Value>& args) {
bool check_value;
std::string error_message;
ParseArgs(args, &check_value, &error_message);
CHECK(check_value) << error_message;
}
void LoggingNativeHandler::Dcheck(
const v8::FunctionCallbackInfo<v8::Value>& args) {
bool check_value;
std::string error_message;
ParseArgs(args, &check_value, &error_message);
DCHECK(check_value) << error_message;
}
void LoggingNativeHandler::DcheckIsOn(
const v8::FunctionCallbackInfo<v8::Value>& args) {
args.GetReturnValue().Set(DCHECK_IS_ON());
}
void LoggingNativeHandler::Log(
const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK_EQ(1, args.Length());
LOG(INFO) << *v8::String::AsciiValue(args[0]);
}
void LoggingNativeHandler::Warning(
const v8::FunctionCallbackInfo<v8::Value>& args) {
CHECK_EQ(1, args.Length());
LOG(WARNING) << *v8::String::AsciiValue(args[0]);
}
void LoggingNativeHandler::ParseArgs(
const v8::FunctionCallbackInfo<v8::Value>& args,
bool* check_value,
std::string* error_message) {
CHECK_LE(args.Length(), 2);
*check_value = args[0]->BooleanValue();
if (args.Length() == 2) {
*error_message = "Error: " + std::string(
*v8::String::AsciiValue(args[1]));
}
v8::Handle<v8::StackTrace> stack_trace =
v8::StackTrace::CurrentStackTrace(10);
if (stack_trace.IsEmpty() || stack_trace->GetFrameCount() <= 0) {
*error_message += "\n <no stack trace>";
} else {
for (size_t i = 0; i < (size_t) stack_trace->GetFrameCount(); ++i) {
v8::Handle<v8::StackFrame> frame = stack_trace->GetFrame(i);
CHECK(!frame.IsEmpty());
*error_message += base::StringPrintf("\n at %s (%s:%d:%d)",
ToStringOrDefault(frame->GetFunctionName(), "<anonymous>").c_str(),
ToStringOrDefault(frame->GetScriptName(), "<anonymous>").c_str(),
frame->GetLineNumber(),
frame->GetColumn());
}
}
}
std::string LoggingNativeHandler::ToStringOrDefault(
const v8::Handle<v8::String>& v8_string,
const std::string& dflt) {
if (v8_string.IsEmpty())
return dflt;
std::string ascii_value = *v8::String::AsciiValue(v8_string);
return ascii_value.empty() ? dflt : ascii_value;
}
} // namespace extensions
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